DE1089939B - Curtain fabric - Google Patents

Description

GERMAN

The invention relates to a curtain fabric with rows of round or elongated holes, in particular for Sun blinds, made of plastic film, fiber fleece or textile fabric, the warp and weft threads through one Finishing and / or impregnating agents are connected to one another.

So far for the production of such sun blinds The fabrics used generally consist of a bleached, optionally colored and in Usually finished and optionally also coated with a plastic compound seal Tissue. Fiber fleece or plastic films have also been used for this purpose.

Depending on the color of the fabric, especially in clear weather with changing clouds at from Clouds of sun overcast the lighting in a room with lowered sun blinds under certain circumstances so small that proper work is not possible. On the other hand but it takes place through the repeatedly falling sun blinds at certain intervals Sunbeams a screen against the glaring sunlight.

Another disadvantage of the roller blind fabrics used hitherto is that when the roller blind is lowered It is practically impossible to see processes taking place outside the building through the lowered roller blind to watch through; for this purpose the sun blind must be pulled up.

There are also already known sun curtains, which are used for the purpose of obstructing solar radiation to fend off, but on the other hand one. To allow a clear view with at relatively great distances spaced apart slots are provided, whereby one also, to the strength of the curtain not to impair, instead of the slots has provided corresponding rows of perforations. It is however, a fundamental disadvantage of these known curtains that with them a uniform weakening the glaring sunlight can not be achieved because of the large dimensions of the Slots or rows of perforations and their line-like training are also relatively large Distance from the curtains, an annoying stripe pattern emerges, for example on the desk top.

These deficiencies are thereby made according to the invention avoided that the round holes are arranged at the same distance from each other and the entire hole area portion does not exceed 10% of the curtain area. The round holes have a diameter in the Order of magnitude of 1 mm and on the one hand prevent direct sunlight from entering the Space, but on the other hand they easily allow a curtain fabric

Applicant:

Konrad Hornschuch Aktiengesellschaft

Weissbach plant,

Weißbach (Württ.)

Hermann Widenmeyer, Weißbach (Württ.),
has been named as the inventor

Looking outwards without it being necessary to pull up the roller blind for this purpose.

In addition, the perforation holes made in the roller blind fabric according to the invention permit so far penetration of white sunlight and daylight into the interior that even with more or less colored roller blind fabric after the direct sunlight has ceased to be undisturbed Working is possible regardless of whether the sun's rays fall directly on the sun blind or whether the sun is behind thick clouds. The many small openings act as well many small pinhole camera shutters through which the sun's rays are bent so sufficiently that in already relatively short distance from the sun blind even in direct sunlight a pleasant, by no means dazzling lighting with unfiltered, so white sunlight is achieved.

For the durability of such perforated roller blind fabrics made of fabric, the warp and weft threads of which are repeatedly interrupted at regular intervals, it is of course necessary to arrest the warp and weft threads in their entirety so that the strength of the fabric does not suffer in any way and that the fabric cannot warp.

For this purpose, the tissue is known per se Way treated with a known finishing and / or impregnating agent, including In addition, one or both sides of the coating with a preferably water-insoluble plastic compound can join.

In contrast to the well-known curtain fabrics and blinds, which because of their woven, knitted or Knüpfart are broken, is in the roller blind fabric forming the subject of the invention According to the invention, the total area of the holes to the total area of the closed fabric is roughly the opposite

009 609/25

Claims (1)

3 4 reversed relationship, as in the case of the well-known stores, which have a shape that deviates from the circular shape or is the case. arranged in a different way than last described. According to the invention, the total area of the passageway can be. It is essential that they only occupy a relatively small proportion of the surface area, for example 10%, so that the roller blind fabric surface is or less than 5% 5 at least 90% of the total surface of the roller blind fabric, whereby an effective shielding of the according to the invention are not perforated,
Rays of sunlight falling on the blind fabric are achieved will. Claim = In a preferred embodiment of the roller blind material, because this results in the least possible weakness ίο curtain material with round holes or elongated holes of the roller blind material with the same overall permeable rows, especially for sun blinds, made of synthetic is achieved, the holes are circular. For the manufacturing film, fiber fleece or textile fabric, its len of these holes can, for example, warp and weft threads by a finishing and / known perforating needles can be used. The holes or impregnating means are connected to one another can, for example, be equal at the corners, characterized in that the round holes tiger triangles, whereby they are arranged at equal distances from one another The overall picture of the relevant roller blind material is three groups and the total perforated area is the highest; result in parallel rows of holes, which is 10% of the curtain surface. at an angle of 60 ° to each other. are inclined to the other. 20 Publications considered: It goes without saying that it does not mean a deviation from German patent specification No. 867 442; of the principle of the invention if the holes have a Swiss patent specification No. 213 023. ® 009 609/25 9.60